Graf 
Natural Laboratories: Scientists in National Parks Sequoia and Kings Canyon [PDF ebook] 

While reading this book, students will explore the world’s largest living things and the work done by scientists at Sequoia and Kings Canyon National Parks in California. Readers will learn how the giant trees were discovered, logged, and how they have since been protected. The Natural Laboratory: Scientists in National Parks series takes a look at the research and responsibilities of scientists working in U.S. national parks. Each 7.5" x 10" photo-filled book explores the topography of the park, its natural resources, the specific projects that have been undertaken there and why these projects are significant. Each 48-page book in the series also features quotes from scientists working in the featured park, to better explain to readers how and why things are done